Author Topic: DxO 8 rendering of ORF files looses pixels  (Read 3947 times)

OldRadioGuy

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DxO 8 rendering of ORF files looses pixels
« on: January 18, 2013, 06:38:41 pm »
When DxO renders a raw file from an Olympus OM-5 E-M5 to a 16-bit TIF, the pixel dimensions of the resulting file are slightly smaller:

4640x3472 to 4527x3393

What is the reason for  this?

Bob
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LaurentP

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Re: DxO 8 rendering of ORF files looses pixels
« Reply #1 on: January 18, 2013, 06:44:39 pm »
Smaller compared to what? To the JPEG output of the camera I suppose?

OldRadioGuy

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Re: DxO 8 rendering of ORF files looses pixels
« Reply #2 on: January 19, 2013, 04:55:34 am »
Smaller compared to what? To the JPEG output of the camera I suppose?

Smaller compared to the original raw file. Both TIFs and JPEGs (at 100%) are slightly smaller.

Curious, I did a comparison with some other raw converters. Both ASP and C1_6Express also produced TIFs of slightly smaller dimensions than the original raw file. PN was the only one I tested producing a TIF with the exact dimensions of the raw file.

The differences are tiny and certainly don't contribute to degrading the quality of the image in any way.

Bob

(sorry I started this thread in the wrong section)
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